<template>
    <div class="app-coutainer">
       <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="teacherQuery.name" placeholder="讲师名" />
      </el-form-item>
      <el-form-item>
        <el-select v-model="teacherQuery.level" clearable placeholder="讲师头衔">
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="添加时间">
        <el-date-picker
          v-model="teacherQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="teacherQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-button type="primary" icon="el-icon-search" @click="pageQuery()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

     <el-table
      v-loading="listLoading"
      :data="teachers"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row
      >


     <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">{{ (current - 1) * size + scope.$index + 1 }}</template>
      </el-table-column>
      <el-table-column prop="name" label="名称" width="80" />
      <el-table-column label="头衔" width="80">
        <template slot-scope="scope">{{ scope.row.level===1?'高级讲师':'首席讲师' }}</template>
      </el-table-column>
      <el-table-column prop="intro" label="资历" />
      <el-table-column prop="gmtCreate" label="添加时间" width="160" />
      <el-table-column prop="sort" label="排序" width="60" />
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <router-link :to="'/teacher/update'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
          </router-link>
          <el-button
            type="danger"
            size="mini"
            icon="el-icon-delete"
            @click="delTeacherById(scope.row.id)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-pagination
      @current-change="pageQuery"
      :current-page="current"
      :page-size="size"
      layout="total, prev, pager, next, jumper"
      style="padding: 30px 0; text-align: center;"
      :total="total"
    ></el-pagination>
    </div>
</template>

<script>
import teacherApi from '@/api/edu/teacher'

export default {
  data() {
    return {
      listLoading: false,
      current:1,
      size:3,
      teacherQuery:{},
      total:0,
      teachers:[],
    }
  },
  created() {
    this.pageQuery();
  },

  methods: {
       pageQuery(current=1){
         this.current=current;
         teacherApi
         .pageQuery(this.current,this.size,this.teacherQuery)
         .then(response=>{
           this.teachers=response.data.items;
           this.total=response.data.total;
         })
       },
    resetData(){
      this.teacherQuery={};
      this.pageQuery();
    },
    delTeacherById(id){
       this.$confirm("此操作将永久删除该讲师, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
       })
       .then(()=>{
         teacherApi.delTeacherById(id).then(response => {
            // 1.成功之后刷新页面
            this.pageQuery();
            // 2.为了用户体验，添加删除提示
            this.$message({
              type: "success",
              message: "删除成功!"
            });
         });
       })
       .catch(()=>{});
      }
    },
}
</script>
